For the competition of spontaneous emission and stimulated emission, which of the following statements is correct:KU3答案窝(daanwo.com)-大学生作业答案及考资分享平台

 KU3答案窝(daanwo.com)-大学生作业答案及考资分享平台

AWith effective “cooling”, we will have low inversion △N=N2-N1KU3答案窝(daanwo.com)-大学生作业答案及考资分享平台

BWith low pump rate , we will have high inversion △N=N2-N1KU3答案窝(daanwo.com)-大学生作业答案及考资分享平台

CWith high photon density, stimulated emission dominates even for low population inversionKU3答案窝(daanwo.com)-大学生作业答案及考资分享平台